Note: When you enter addresses or domain names, Gmail checks these against the From: part of the message header, not the envelope sender (or Return-Path section of the message header). Therefore, the From: sender must exactly match an address or domain you enter.

Click Use existing or create a new one.

Select the name of an existing list, or enter a custom name for a new list in the Create new list field, and then click Create.

Hover over the list name, and click Edit.

Click Add to add email addresses or domains to the list.

Enter the address or domain name, and click Save.

To add more email addresses or domains to the list, repeat steps 4 and 5.

In the Options section, select Bypass this setting for messages received from addresses or domains within these approved sender lists to set up a new approved sender list or to reuse a list that you've already created. An approved sender list lets you approve messages from specific addresses or domains. When you set up an approved sender list in the Blocked senders setting, messages from domains or email addresses in the list will bypass the Blocked senders setting. Note: Other settings can still cause the message to be blocked.

Note: If a message from an approved sender contains a virus or is part of an email attack, Google's virus filters will still prevent it from reaching your users.

To create an approved sender list:

Check the box in the Options section ("Bypass this setting for messages received from addresses or domains within these approved sender lists").

Click the Use existing or create a new one option.

Select the name of an existing list, or enter a custom name for a new list in the Create new list field, and then click Create.

Hover over the list name, and then click Edit.

Click Add to add email addresses or domains to the list.

Enter an email address or the domain name; for example, solarmora.com.

Note: Click Do not require sender authentication to bypass the Blocked senders setting for approved senders that do NOT have authentication, such as SPF or DKIM enabled. Use this option with caution; it can potentially lead to spoofing.

Click Save.

To add more email addresses or domains to the list, repeat steps 5–7.

When you're finished, click Add Setting at the bottom of the dialog box, and then, at the bottom, of the page click Save.